A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 4140-00-604-4826
NSN 5910-01-371-2553
NSN 7035-01-407-6413
NSN 6645-01-284-6533
NSN 5915-01-570-8305
NSN 6645-00-472-2468
NSN 5835-01-376-8454
NSN 6650-01-186-2426
NSN 5905-01-187-0630
NSN 5855-00-925-0114
NSN 5935-00-224-6020
NSN 6645-01-592-7862